Isotopes

a. are identical in mass number to the "standard" element.
b. contain a different number of electrons than the "standard" element.
c. contain a different number of protons than the "standard" element.
d. contain the same number of protons but a different number of neutrons than the "standard"
element.
e. are actually a different element than the "standard" element.


D

Biology & Microbiology

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